package 用两个栈实现队列;

import java.util.Stack;
/*
用两个栈实现队列
 */
public class MyQueue
{
    Stack<Integer> stack1 = new Stack<Integer>();
    Stack<Integer> stack2 = new Stack<Integer>();

    public void push(int node)
    {
        stack1.push(node);
    }

    public int pop()
    {
        if (stack2.isEmpty())
        {
            while (!stack1.isEmpty())
                stack2.push(stack1.pop());
        }
        return stack2.pop();
    }
}
